I confirmed that this is present in version 2.2.40 on debian as well.

respecting the "disabled" state is ready for testing; the rest won't be done on this ticket

The changes where backported for VSD33, but they have little to do with the original request. They only address https://dev.gnupg.org/T6072#167392

great, thanks!

correct, this only affects encryption

I assume you only implement this for encryption and not decryption. The latter should always be possible.

With caching, did you have something like this in mind?

The texts were changed as discussed in the linked MR. I haven't changed the order of the buttons.

Yes, I think we should support this. Also X448. Thanks for the report and the samples.

Go ahead and split it of, then. And setting a key to disabled in Kleopatra itself is not that urgent that it has to be in vsd33.

I think Kleopatra now respects the "disabled" state of OpenPGP certificates. I don't remember the outcome of our discussion about allowing to disable OpenPGP certificates from Kleopatra, but I think this should be split out of this ticket.

Was anything done here apart from en-/decoding filenames to/from UTF-8 on Windows?

I disabled this for offline keys because I erroneously assumed that one would need the primary key for changing the password. We can simply replace the check for the primary secret key with a check for any secret subkey that's stored on disk.

Along with the monitor we should also implement a domain selection feature.

Another important use-case is to provide a way to migrate to a newer smartcard.

Of course, it should be possible to toggle "disabled" in Kleopatra.
A (context) menu entry "disable certificate" (or "enable certificate") should be sufficient.

I had wrong interpretation about symmetric cipher algorithm identifier in the draft. It specifies symmetric cipher for the following Symmetrically Encrypted Data Packet (I was wrongly interpret as if it were specifying algo for AES keywrap).

"Today" was already removed together with other changes for T6621: Kleopatra: Remove "in n days/weeks/months/years" input from Change Validity Period dialog.

I merged the change by Werner to get the value from frontend.

In the current code, just for testing against the test vector in m https://datatracker.ietf.org/doc/html/draft-ietf-openpgp-pqc-02, there are specific value in the key combiner KDF.
Namely, the value 105 for fixedInfo is defined in the draft (and it will be changed).

I created a pubkey (actually a subkey) for your above test keys:

I use this for testing:

With Gpg4win-4.3.1 I consider this solved:

On March 11 and 18, the private key file DE1AB1D22899CEC7DBB1A7863F34E6E92BFB7756.key was wrong.
I updated on March 25. Now, the endian is GnuPG (d is big endian).

Thank you!

See T7046 for the release info. Note that the mentioned fix for kwallet already landed.

I extracted data from https://datatracker.ietf.org/doc/html/draft-ietf-openpgp-pqc-02 and compose x25519 key and MLKEM768 key. Here they are.
x25519 :